I still don't think Miller was joking and that he was laughing at TT while TT was nervously laughing because he got embarrassed in front of thousands. But no matter. Miller was dumb to put himself in that position and I'd have said the same thing if it were Hughes.
And why can't facemasks be reviewed? There's no judgement to them anymore.
TT embarrassed? Doubt that. Miller pulled a child's prank, TT was laughing it off and then the smile got bigger when he saw the flag.
Now, TT was pointing towards Miller, maybe he was asking the Ref did you see that ****?